The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 19, 2000
Filed:
Aug. 23, 1999
Asif Q Khan, Austin, TX (US);
James O Mergard, Pflugerville, TX (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A processor-based system such as a microcontroller supports a non-concurrent mode in which a bus master requesting ownership of a peripheral bus is forced to acquire ownership of both the peripheral bus and a processor bus. The system includes a peripheral bus arbiter to detect a peripheral bus request for the peripheral bus by a bus master, to generate a processor bus request for the processor bus in response to detecting the peripheral bus request, and to grant the bus master ownership of the peripheral bus if the bus master is granted ownership of the processor bus. The peripheral bus arbiter maintains ownership of the processor bus by the bus master until the bus master releases ownership of the peripheral bus. Similarly, a bus master seeking ownership of the processor bus can be forced to acquire ownership of the peripheral bus. The non-concurrent mode can be applied to various multi-bus architectures. One advantage of the non-concurrent mode is improved debug capability.